\ CALLISTE ATRICiERULEA. 



THE BLACK-AND-BLUE TANAGER. 



PLATE XXXI. 



Procnopis atro-ctem\ea.. Tschudi, Consp. Av. in Wiegm. Arch. 1844, p. 285; 

 Faun. Per. p. 199. pi. 13. fig. 2. 



Calliste atrocserulea . . Gray, Gen. App. p. 17- 



Sclater, Contr. Orn. 1851, p. 59 ; P. Z. S. 1856, 



p. 258 ; Syn. Av. Tan. p. 84. 

 Chalcothraupis atroceemlea, Bp. Rev. et Mag. de Zool. 1851, p. 144 ; Note 



s. 1. Tang. p. 19. 



Mas adultus. Clare caeruleus, alis caudaque nigris cseruleo nnar- 

 ginatis : interscapulio toto nigro : capita toto obscure viri- 

 descenti-cseruleo, plaga magna nuchali pallide straminea : 

 subtus cseruleus, gulfi magis thalassina, ocellis quibusdam in 

 pectore nigris: rostro et pedibus nigris : long, tota 5*0, alee 3"0, 

 caudse 2'0 poll. Angl. 



Several of the birds inhabiting the eastern wood-district of the 

 republic of Peru, vphich were at one time considered identical with 

 species well known to us as coming from the interior of New Grenada, 

 have been since found on accurate comparison to be different, although 

 very closely allied to the New-Grenadian forms. Thus the Pipreola 

 elegans of Tschudi is truly distinct from the P. aureipectus of New 

 Grenada ; the Jnc^orm's analis from the I. porphyrocephala ; and the 

 Dipper, discovered by Delattre in the mountains of the latter republic, 

 and referred by De Lafresnaye to Tschudi" s Cinclus leucocephalus, is 

 certainly specifically, and possibly even generically separable from that 

 bird. The tendency to unite the corresponding species of these 

 countries has no doubt, however, been increased as well by the poverty 

 of the figures and inadequacy of the descriptions in Von Tschudi' s 

 Fauna Peruana, as by the difficulty of obtaining specimens from this 

 part of the world. No one who had seen an example of the present 

 Tanager would be likely to confound it with the Calliste ruf cervix 

 (which, as I have already mentioned, has been done). The wholly 



